Age old discussion I know but MM or MC? Benefits?


Some mighty long discussions on this already here but I need a refresher!
Having decided to upgrage my phono amp to a Dynavector p75 mk3 I am now wondering about my cartridge.
At present I have a Clearaudio Emotion 4 table with a Clearaudio Artist v2 cartridge.
What are main difference between mm and mc that I could expect to actually hear?
And lomc and homc? What is all that about?
Sorry if this has been thrashed to death already but just trying to get a laymans understanding if possible.
128x128uberwaltz
Maybe I should rephrase and clarify.
I am quite happy with the sound of my vinyl but the grass is always greener on the other side so I am curious as to what I am missing if anything.
Baring in mind my components , are mc carts something I should even care about?
Raul who started this thread never stated that MM kind is/was better then MC kinds. His primary thesis was that MM carts are an good alternative which was forgotten because of the MC domination. But the most of us have seen this as ''MM contra-revolution''. Not to stay behind I bought each ''cart of the month'' that I could get. But I prefered all this time MC kinds.There is nothing rational in our hobby
you know (grin).































"  are mc carts something I should even care about? "

you wont know until you try one.     

obviously it has your interest or you wouldnt have started this thread about it.
I agree with addy - no matter what anyone tells you, you won't know if changing to an MC will be an improvement for you until you try it. 
It may mean something to you, it may not. My guess is - it will not. 
And these are exactly the real world thoughts I am looking for.
Yes it has my interest mainly because we all feel the need to upgrade and change to try and find that improvement in sq that gives us a feeling of great satisfaction and a job well done....lol.
But also I have "upgraded" many times only to feel I took 3 steps backwards!
Are my table,arm and phono amp up to the task of revealing and sq improvement from a mc cart to begin with.
And what sort of price range and type should I be looking at?
Mostly rock music,modern and classic rock.
Definitely no jazz or classical here